Hemoglobin A2

Hemoglobin A2 (HbA₂) is a normal variant of hemoglobin A that consists of two alpha and two delta chains (α₂δ₂) and is found at low levels in normal human blood. Hemoglobin A2 may be increased in beta thalassemia or in people who are heterozygous for the beta thalassemia gene.

Contents

• Medical vocabulary what does hemoglobin a2 mean
• 1192 hemoglobin a or hemoglobin a2
• References

HbA2 exists in small amounts in all adult humans (1.5-3.1% of all hemoglobin molecules) and is increased in people with sickle-cell disease. Its biological importance is not yet known.